views: Rename ComboboxListener::ItemChanged to something more accurate.

ui/views/controls/combobox/native_combobox_views.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/combobox/native_combobox_views.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
@@ skipping 37 matching lines @@
 // Define the id of the first item in the menu (since it needs to be > 0)
 const int kFirstMenuItemId = 1000;
 
 }  // namespace
 
 namespace views {
 
 const char NativeComboboxViews::kViewClassName[] =
     "views/NativeComboboxViews";
 
-NativeComboboxViews::NativeComboboxViews(Combobox* combo_box)
-    : combobox_(combo_box),
+NativeComboboxViews::NativeComboboxViews(Combobox* combobox)
+    : combobox_(combobox),
       text_border_(new FocusableBorder()),
       disclosure_arrow_(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
           IDR_DISCLOSURE_ARROW).ToSkBitmap()),
       dropdown_open_(false),
       selected_index_(-1),
       content_width_(0),
       content_height_(0) {
   set_border(text_border_);
 }
 
@@ skipping 279 matching lines @@
 
 #if defined(USE_AURA)
 // static
 NativeComboboxWrapper* NativeComboboxWrapper::CreateWrapper(
     Combobox* combobox) {
   return new NativeComboboxViews(combobox);
 }
 #endif
 
 }  // namespace views